Bar crossings can be dangerous

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Bar Crossings can be Dangerous
Be Aware - Be Prepared - Be Experienced

Bar Crossings
Bars form at the entrance to rivers and inshore waterways because of the drift of sand along the coasts. Queensland has many dangerous coastal bars and often they are the only way boats can get access to, or reach shelter from, open waters. Even on a good day, conditions
on a bar can change quickly and without warning. Local knowledge, experience and the right kind of boat are critical factors when attempting bar crossings.

If the weather looks adverse, don't risk a bar crossing.

Even experienced boaters should exercise caution when crossing a bar

Before crossing a bar
All sand bars are different.
Only experienced boaters should attempt to cross a coastal bar, and even then you should exercise caution. You should observe the wave patterns and conditions prior to crossing.

Learn what you can from local operators or volunteer marine rescue groups.

Make sure you ask about any leads and beacons that assist in navigation over the bar. Always report your intentions by radio before crossing and advise that you are safely over.

Gain experience by crossing with an experienced operator before attempting a bar crossing by yourself. Ensure the boat is seaworthy and is capable of taking some impact from waves. Smaller open boats are less appropriate as these can fill with water and capsize.

Conditions offshore can be ideal for boating but the conditions on the bar can be dangerous due to swell. Do not attempt a bar crossing in heavy swells and strong wind. Avoid crossing a bar on a run-out tide when the most dangerous wave conditions usually occur.

Be prepared to cancel or delay the crossing.

Preparations for crossing
Prior to crossing, cheek the tides and weather. Obtain a weather report for the time of crossing the bar and a weather forecast of conditions expected on your return.

Going out
The skill of crossing a bar is to know the best water by judging the wave pattern, crossing at the calmest point and manoeuvering the boat around breaking waves. Look for the deepest water or channel; going aground on a bar can be disastrous.

Tactics may vary between displacement boats (slow) and high-speed planing boats. Be patient and watch the sets of swells before choosing the best time to go. Once committed, keep going - attempting to turn around in front of an incoming wave can be disastrous. Do not hit the waves at high speed; take them as close to head on as possible. Some bars have waves breaking across the whole entrance and finding a way through may be near impossible. Be prepared to take a wave head on and take water over the bow if you find yourself in a position where there is no alternative.

The boat must meet the incoming wave energy. Do not hit waves at high speed and do not allow waves to break onto your boat.

Before crossing a bar, the following precautions should be taken:
	Prepare the boat
	Check the steerking, bilge, hatches and drains
	Check all lifesaving equipment and ensure it is ready for an emergency
	All crew or passengers should wear a lifejacket
	Clear decks and secure all lines
	Secure moveable items
	Ensure watertight integrity
	Ensure correct trim
	Check and test engines, steering and controls
	Ensure the engines are drawing fuel from a full tank
	Use your marine radio to log on and and off with a volunteer marine rescue group
	Check the state of the tide (best one hour before high, worst in mid-ebb)
	Observe wave patterns and sets to establish when calmer periods occur
	Look for a position marker or lead so as to locate the entrance for the return trip

Some general principles may include the following:

look for lulls and sciect a line of least activity
Where possible, cross on an incoming tide when the wave is running with the tide
Keep your boat generally bow on as the waves approach and do not let the boat turn sideways to a breaking wave
Head up into the waves and bear away quickly on their backs
Accelerate where possible, but avoid getting airborne.
Head for saddles which occur between peaking waves about to break
Navigate quickly clear of the bar
Take back leads and marks to locate the entrance for your return trip

Choose your route across the bar carefully and avoid the highest standing waves

Coming In
When coming in, high speed boats (at ieast capable of 18 knots) should travel at the same speed as the waves. The aim is to travel in on the back of a wave, staying ahead of the waves breaking behind the boat. Again, watch for patterns and deeper areas.

Approaching from sea, increase power to maintain speed within the set of the waves.
Position the boat on the back of the wave - do not surf down the face of the wave.
Adjust the boat's speed to match the speed of the waves but do not attempt to overtake the waves.

Choose your route across the bar carefully and avoid the high standing waves

Displacement boats may have to come in very slowly to avoid surfing and broaching-to (getting caught side on to a wave).

In extreme conditions, the very difficult but vital decision not to come in may have to be made. It may well be safer to stand off in deeper water until conditions improve or to seek alternative shelter.

General Advice
Never underestimate a coastal bar.
Even small waves can capsize or swamp and sink a boat. If you are unsure or inexperienced, why go out and risk lives? Wait until conditions provide a safe crossing that you can handle.

Know where the deepest water is and cross during the top of the tide to ensure you don't risk running aground. Watch for a sufficient time to assess the wave patterns and where waves break the least.

VVear lifejackets while crossing the bar. A capsize can happen instantaneously and trying to put on a lifejacket while in choppy waters is near impossible.

As their skipper, think of your crew and passengers and don't take risks.

Site maintained by Leisure Marine: Tuesday, 7 October 2008
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3242 Old Cleveland Road, Capalaba 4157, QLD.
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